Hello. I have FSX. after i install the acceleration expansion pack, i No longer have a "Multiplayer" Tab on the left side menu. It is there when Acceleration is not installed, and i can play online also. But when i install acceleration, it just disappears. Also during the acceleration install process, it does NOT ask me for a product key, I have a feeling this has something to do with the problem, Does anyone know how to fix this? I have Windows Vista 64 bit SP2Thanks

I'm not quite sure what the exact problem is here, but you said you are running SP2. FSX Acceleration has SP2 already in it. There may be a problem with its own SP2 conflicting with the SP2 you have now. I would suggest uninstalling the SP2 you are using now, so there is only one version that Acceleration can use. See if that helps. Good Luck! Matt

http://virtualfsx.wordpress.com/2010/12/09/flight-simulator-x-gold-edition/ If you installed FSX-X roll back; se my tutorial with the version s of fsx.exe